I know we have general traders & you can source almost all building materials through buying & scrounging your odds & sods but I'd love to see a dedicated commodities merchant. Someone you could buy ANYTHING you needed from wood to fiber optics etc.

Maybe have the three tier shop upgrade as well and the upgrades give you access to the rarer materials as well as much bigger shipments than the piddly 25 we have - all the way up to 1000 or somesuch?

Make life much easier